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我在使用Python为Oracle数据库创建SQL查询时遇到了问题。 我想绑定字符串变量,它不起作用,你能告诉我我做错了什么? 这是我的代码:Python cx_Oracle SQL绑定字符串变量
import cx_Oracle
dokList = []
def LoadDatabase():
conn = None
cursor = None
try:
conn = cx_Oracle.connect("login", "password", "localhost")
cursor = conn.cursor()
query = "SELECT * FROM DOCUMENT WHERE DOC = :param"
for doknumber in dokList:
cursor.execute(query, {'doknr':doknumber})
print(cursor.rowcount)
except cx_Oracle.DatabaseError as err:
print(err)
finally:
if cursor:
cursor.close()
if conn:
conn.close()
def CheckData():
with open('changedNamed.txt') as f:
lines = f.readlines()
for line in lines:
dokList.append(line)
CheckData()
LoadDatabase()
的cursor.rowcount
输出为0,但它应该是数量大于0
好吧,我改变了它,但'cursor.rowcount'的值仍然是0,'select:from dual'的doknr也不起作用... – fafal
rowcount将用于DML。对于查询,使用SELECT COUNT来获取行数。 –